OK I saw this Video on Youtube http://www.youtube.com/watch?v=Xdxap-b1L08 and thought, instead of the voice Shield i take a Motor shield to controll two hacked Servos(continuous rotation). I dont need any Sensors. For stearing I got two other Servos which are glued to the side of the hacked Servos.I tried it with an IR Sensor and a remote controll. But i can`t find any plans ore code!